Technical data

7-14 Fabric OS Administrator’s Guide

Publication Number: 53-0000518-09

Using FICON CUP

In this example, the ASM bit is set to on; then, the port at slot 1, port 1 is enabled persistently:

Port and Switch Naming Standards

Fabric OS handles differences in port and switch naming rules between CUP and itself as follows:

• CUP employs 8-bit characters in port address names and switch names; Fabric OS employs 7-bit

characters. When fmsmode is enabled, all characters greater than 0x40 and not equal to 0xFF

(EBCIDC code page 37 [0x25]) are allowed in the name; therefore, it is possible for a channel to

set a name with nonprintable characters. If a name contains nonprintable characters, they are

displayed as dots (...). The following characters are also displayed as dots: semicolon (;), comma

(,), “equal” sign (=), and “at” sign (@).

• CUP has a 24-character unique port name limitation; Fabric OS supports port names up to 32

characters long. When fmsmode is enabled, names longer than 24 characters are truncated.

• To ensure that they are unique, the characters ~00, ~01, ~02, and so on are appended to port names.

• CUP allows a 24-character switch name; Fabric OS limits the switch name to 15 characters. To

reconcile this difference, Fabric OS files the first 15 characters in the WWN record and stores the

extra characters for CUP use.

Adding and Removing FICON CUP Licenses

If fmsmode is enabled when the FICON CUP license is removed, the control device is reset. PDCM

enforcement continues. If fmsmode is disabled when the FICON CUP license is removed, no special

action is taken.

If fmsmode is enabled on a switch that does not have a FICON CUP license and then the license is

installed, you must first disable and then reenable fmsmode. If fmsmode is disabled and a FICON CUP

license is installed, no special action is required.

switch:admin> ficoncupshow modereg

POSC UAM ASM DCAM ACP HCP

------------------------------

1 0 0 0 1 1

switch:admin> ficoncupset modereg ASM 1

Mode register bit ASM has been set to 1.

switch:admin> portenable 1/1

ote

Configuration files that contain nonprintable characters should not be edited manually,

because many editors replace nonprintable characters with some other characters without

warning the user first.